import java.util.Calendar;

public class Num_9 {
    public static String oddNumber(String user){
        StringBuilder ret =new StringBuilder("D");
        Calendar calendar = Calendar.getInstance();
        String year = calendar.get(Calendar.YEAR)+"";
        String month = calendar.get(Calendar.MONTH) + 1+"";
        String day = calendar.get(Calendar.DATE)+"";
        String hour = calendar.get(Calendar.HOUR)+"";
        String min = calendar.get(Calendar.MINUTE)+"";
        String sec = calendar.get(Calendar.SECOND)+"";

       ret.append(year+month+day+hour+min+sec+user);
        return ret.toString();


    }

    public static void main(String[] args) {
        System.out.println(oddNumber("root"));

    }
}
